[
https://issues.apache.org/jira/browse/CALCITE-3504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16974182#comment-16974182
]
Feng Zhu commented on CALCITE-3504:
-----------------------------------
Is this feature important in some scenarios?
Calcite parser allows empty array, but the validator rejects it, because it
can't determine the type of an empty array.
I test it in PostgreSQL. It also throws exception ("cannot determine type of
empty array").
For your requirement, I think it is better to implement a function, in which
you can create empty array with specified type.
> allow empty ARRAY[] literals
> ----------------------------
>
> Key: CALCITE-3504
> URL: https://issues.apache.org/jira/browse/CALCITE-3504
> Project: Calcite
> Issue Type: Wish
> Affects Versions: 1.21.0
> Reporter: Pressenna
> Priority: Major
>
> Currently an ARRAY expression requires at least one element.
> Please allow empty ARRAY expressions.
> {code:sql}
> SELECT ARRAY[] FROM foo;
> -- or more concise for updates:
> UPDATE food set array_column = ARRAY[];
> {code}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
